Section I. IDENTIFICATION AND DESCRIPTION

TB 55-4920-343-35/1

Section I. IDENTIFICATION AND DESCRIPTION

1-1.

Test Instrument Identification.

This bulletin provides periodic instructions for the calibration of simulator self-tuning vibration absorber system,

and will be referred to as the "test instrument" throughout this bulletin.

a. Nomenclature: Simulator, self-tuning vibration absorber system

b. Manufacturer: Boeing-Vertol Division

c. P/N: 114G1409-1 and 114G5090-1

d. FSN: 4920-437-7558

e. Model Variations: Model 114G5090-1 has two output jacks on front panel to check actuator voltage.

1-2.

Calibration Description.

Test instrument parameters and performance specifications which pertain to this calibration are listed in table 1-1.

Table 1-1. Calibration Description

Test instrument

parameters

Performance specifications

Input power requirements

115VAC, 400 Hz, 3-phase

18 vdc ±2.2V

Operating voltage dc

Ripple voltage p-p

1.9 vac p-p

Simulated accelerometer

1.0 to 3.5 vac (rms)

3.8 vac ±l.Ov

Reference voltage

12 Hx ± 1.8 Hz

Frequency

Phase angles

Retract Signal:lagging phase angle 750°

Extend Signal:lagging phase angle 750°

1-3.

Forms and Records.

Maintenance forms, records, and reports which are to be used by the calibration personnel at all calibration levels are

listed in and prescribed by TM 38-750.

1-4. Reporting of Errors.

The reporting of errors, omissions, and recommendations for improving this publication by the individual user is

encouraged. Reports should be submitted on DA Form 2028 (Recommended Changes to Publications), and forwarded

direct to Commanding General, US Army Aviation Systems Command, ATTN: AMSAV-M, PO Box 209, St. Louis,

Missouri 63166.